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ANTI-LOCK BRAKING SYSTEM (ABS) DIAGNOSIS TSB Revision ANTI-LOCK BRAKING SYSTEM (ABS) <RWD> 35B-45 . DIAGNOSIS Required Special Tool: • MB991223: Harness Set . STEP 1. Check the ABS warning light circuit at ABS-ECU (1) Disconnect ABS-ECU connector A-85. YES : Replace the hydraulic unit (integrated with ABS-ECU) and then go to Step 15. NO : Go to Step 2. STEP 2. Check the ABS relay. (1) Remove the ABS relay. − 4 when battery voltage is applied between terminals 1 − 2. Q: Is the ABS relay in good condition? YES : Go to Step 3. AC201944 CONNECTOR : A-85 A-85(B) A-85 HARNESS AD 18 12 11 20 19 10 3 2 1 13 14 22 23 17 16 25 24 15 8 7 6 5 4 21 9 26 AC004503 AC ABS WARNING LIGHT BATTERY TESTER SPECIFIED Not applied 3 − 4 Less than 2 ohms • Connect terminal 2 to the • Connect terminal 1 to the 3 − 4 Open circuit AC004866 |